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Home > Obtaining IP Rights > Patents > Classification > FI revision information

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FI Revision Information

FI scheme is revised twice a year in correspondence to the progression of technology. When FI scheme is revised, documents which were already classified with old FI entries are reclassified accordingly. There are cases where reclassification work requires a few years. It is necessary to use both of old and new FI entries for searching while reclassification work is not completed.

To find FI new entries, deleted entries or changed entries, see below.

To find technical fields where FI reclassification is ongoing or planned (PDF:31KB)

[Last updated 15 September 2017]

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